OT: Diff between brightness and exposure sliders in ACR
Today someone asked me the difference between the brightness and exposure sliders in Adobe Camera Raw interface. I could not come up with the proper answer. I know that the brightness slider would be same as moving the center slider in the histogram dialog to a higher number. The exposure slider I am not sure about. Cheers, Barry Rudick Aker Imaging
Actually, in the new order (Process 2012) there is no Brightness slider. Exposure affects all levels on the image in a fairly linear manner, while the Whites slider has a fairly similar effect when moved to the right, but less effect on the darker sections of the image then the Exposure slider when moved to the left. In practice, I adjust the mid tones with Exposure, and the top end with Whites, adjusting the lower highlights against that with the Highlights slider. There is a similar balance between the Blacks and Shadows sliders on the low end. On Oct 17, 2012, at 4:42 PM, Barry Rudick <barryr@azphoto.com> wrote:
Today someone asked me the difference between the brightness and exposure sliders in Adobe Camera Raw interface.
I could not come up with the proper answer. I know that the brightness slider would be same as moving the center slider in the histogram dialog to a higher number.
The exposure slider I am not sure about.
C. David Tobie Global Product Technology Manager Datacolor 5 Princess Road Lawrenceville, NJ 08648, USA 609.924.2189 www.datacolor.com Phone: 207.685.9248 Mobile: 207.312.0448 Fax: 207.685.4455 Email: cdtobie@datacolor.com Skype: cdtobie
Yet with OSX 10.5.8 and PS CS4. Exposure slider is what you read, exposure, and afects to image as if you open or close diaphragm, or up or down shutter speed or "film speed". Brightness slider afects mainly to the center of histogram without immediate tendency to clip highlights or shadows. Salud Jose Bueno
participants (3)
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Barry Rudick
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C D Tobie
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José Ángel Bueno García